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(No Model.)

' R. J. GHRISTY.

BREAD KNIFE.

No. 460,677. PatentedOct. 6, 1891.

UNITED STATES PATENT OFFICE.

RUSS .I. OHRISTY, OF SANDUSKY, OHIO, ASSIGNOR TO ROBERT H. RICE, OF

' FREMONT, OHIO, AND LEONIDAS H. ORESS, OF NEIV YORK, N. Y.

KNIFE.

SPEGIFIGATION forming part of Letters Patent No. 460,677, dated October6, 1891.

Application filed November 4, 1890.

To all whom it may concern.-

Be it known that I, RUSS J. OHRISTY, residing at Sandusky, in the countyof Erie and State of Ohio, have invented certain new and usefulImprovements in Bread Knives, of

which the following is a specification, reference being had therein tothe accompanying drawings. 7

This invention relates to knives for cutting 1o bread, cake, and thelike.

The object of the invention is to produce a knife for cutting bread orthe like, which will enable the user to give the bread a neat and smoothout and even while the bread is warm.

Figure 1 is a side elevation of the knife, showing the serrated edge andthe bevel on the blade, the handle being partly broken away. Fig. 2 is areverse side elevation of Fig. 1, showing the entire rear surface on thesame plane, part or handle shown in dotted lines. Fig. 3 is across-section taken on the line a: m, Fig. 1. Fig. 4 is a similarcross-section taken on the line yy, Fig. 1.

The letter A represents the face of a knife having a serrated or toothededge, the teeth being preferably formed by reverse curves, so that thespace between the teeth is of similar curve to the teeth. All the teethas well as the edge between the-teeth are sharpened by a bevel orincline from the front face A of the blade downward toward the rear faceA, and thus form the cutting-edge.

O represents the handle partly broken 3 5 away. This handle may be ofany usual or approved construct-ion.

In Fig. 1, A represents the rear side of the knife, which is a planesurface. The plane faces A A of the blade are substantially parallel.

These knives are so made that if the edges Serial No. 370,310. (Nomodel.)

' of two knives were put together one upon the other, one with the bevelup and the other with the same down, the rises of one would fit into thefalls of the other, thus producing a smooth surface on both sides of thetwo blades. The bevel of the cutting-teeth is formed in the first placeby the grinding all on one side, the teeth and the interdental portionsof the blade being ground away by curved faced grindstones. The teethmay be sharpened afterward on the bevel side by grinding or filing witha rounded stoneor file. Preferably the knifeis afterward ground on theplane surface on a fiat stone, which sharpens the teeth and the spacesor depressions between them at the same time.

This knife is specially serviceable for cutting bread, as it cuts assmoothly when the bread is Warm as the ordinary knife does when the sameis cold.

It is well known that it is very difficult to cut warm bread with theordinary knife. This knife need only be used to appreciate its advantageover the ordinary knife.

Hay-knives, sickles, and the like have been made with teeth prior to myinvention, but not with a cutting-edge like my knife.

\Vhat I claim is V A bread-knife having teeth at one side formed onreflex curves, so that the curved spaces between the teeth arecomplementary to the teeth, and the teeth of one blade will fill thespaces between the teeth of another blade when the two are turned edgeto edge, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

RUSS J. OHRISTY.

Witnesses:

FRANK WENTZ, FRANK SEITZ.

